Tese de mestrado integrado, Engenharia da Energia e do Ambiente, Universidade de Lisboa, Faculdade de Ciências, 2015; The aim of this master thesis is to explore a new concept in energy storage, the liquid assisted compressed air energy storage (LACAES). Several other energy storage technologies were briefly reviewed to set a comparative basis for LACAES. The fundamentals of compressed air energy storage (CAES)...